OPERATION
5
ANGLE TO THE CLEANING SURFACE
When spraying water against a surface, maximum impact
is generated when the water strikes the surface head on.
However, this type of impact tends to cause dirt particles
to imbed in the surface, thereby preventing the desired
cleaning action. The optimal angle to spray against
the surface is a 45 degree angle. Spraying against the
surface at this angle provides the most beneficial impact
force combined with efficient removal of debris from the
surface.
DISTANCE FROM CLEANING SURFACE
Another factor that determines the impact force of the water is the distance from the spray
nozzle to the cleaning surface. The impact force of the water is increased as the nozzle is
moved closer to the surface.
AVOID DAMAGING SURFACES
Damage to cleaning surface occurs when the impact force of the water exceeds the
durability of the surface. The impact force can be varied by changing the nozzle adapter.
NEVER
use a narrow, high impact stream or a turbo/rotary nozzle on a surface that is
susceptible to damage. Avoid spraying windows with a narrow high impact stream or
a turbo nozzle as this may cause breakage. Avoid damaging surfaces by following the
1.
Before triggering the gun, adjust the nozzle to a wide fan pattern.
2.
Place the nozzle approximately 4-5 feet and 45 degree angle from the cleaning surface
to the trigger gun.
3.
Vary the fan pattern spray angle and the distance to the cleaning surface until optimum
cleaning efficiency is achieved without damaging the surface.
DETERGENTS
The use of detergents can dramatically reduce cleaning time and assist in the removal of
stains. Some detergents have been customized for pressure washer use for specific cleaning
tasks. The detergents are about as thin as water. The use of thicker detergents like dish soap,
will clog the chemical injection system and prevent the application of the detergent.
The cleaning power of detergents comes from applying the to the surface and giving them
time to break down the dirt and grime. Detergents work best when applied at low pressure.
The combination if chemical action and high pressure rinsing is very affective. On vertical
surfaces, apply the detergent starting at the bottom and work your way upward. This will
prevent the detergent from sliding down and causing streaks. High pressure rinsing should
also progress from the bottom to the top. On particularly tough stains, it may be necessary
to use a brush in combination with detergents and high pressure rinsing.
